분야
pptx2. The relation of solid state physics
3. Application of solar cell
a photovoltaic cell that uses organic electronics like conductive organic polymers or small organic molecules for light absorption and charge transport
Basic principle of solar cell
When light is illuminated at cell, the photons are absorbed in the organic layers.
The excitons diffuse to interface between donor and acceptor.
The excitons are separated by electron and hole.
The separated electron and hole move to the electrodes, respectively.
An exciton is a bound state of an electron and hole which are attracted to each other by the electrostatic Coulombic force.
The exciton diffuses to around by chemical potential.
The lifetime
